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The direction on my computer controlled exercise bike is your maximal heartbeat rate is 220 minus your age in years. Thus, at 70, my maximal HR is 150. It has a profile where you can input your age, decide what percentage of maximal HR you want and it takes you there (you have to pedal of...

The body uses about 90Kcal per hour just to operate - hence the 2000 Kcal per day for an adult male. That is equivalent to 100 watts. So 180 Kcal would power your metabolic demands for 2 hours - a Mars Bar would do the same for 5 hours! Fats / Oils of any sort contain 9000 Kcal/Kilo so that...

I happened to see this on You Tube and thought it interesting

Just a suggestion https://www.amazon.co.uk/Adult-Stabilisers-Training-Mobility-Wheels/dp/B01KIFZ0CY/ref=sr_1_3?ie=UTF8&qid=1502099754&sr=8-3&keywords=adult+bike+stabilisers

A charge of e-bikes

Have you tried penetrating oil on the part with an overnight soak

DBye. Just noticed your Avatar photo. That really looks just like me when a small child. I used to love sticking hairpins into the open mains sockets (no 13 amp covered sockets then) to short them out and get a blue flash (never a shock) My father never could understand why he had to keep on...

When trying to run it out choose a short "circular" course around home so that when the battery does pack up you do not have too far to ride home - it will be a boring exercise going round the circuit again and again

36x13=468, 48x12=576 - the larger the resulting figure the greater potential range

Perhaps it was an electric one charging its batteries!!

I was issued with a RAF College Cranwell Sports Blazer in 1966 when I gained a cadetship. I still have it. I was 15st 7 in 2014 and came down to 11st 7 later that year - deliberately. I am still that weight now and my blazer fits perfectly - I was 20 when issued, 71 now

D8VEH, You forgot about the cost of a whole new wardrobe of clothes after you lose 40 kg - most impressive you are to be highly congratulated. Your next challenge is to keep that weight off after your valiant initial success. Really well done!

When will you be unloading it from the car?

If you provide a 100 watt input yourself, then you are burning 90 Kcals per hour, no matter what else the bike motor is providing. 100 watts is a reasonable effort to provide without serious straining

The only silly question is the unasked one.

or this...

Nail varnish is a good locking medium for that sort of small nut, and can be broken if necessary to undo the fastening in the future, if you don't like pink (that easily shows which nuts you have locked and those you have missed) then you can always use clear varnish

Local Sainsburys http://www.sainsburys.co.uk/shop/gb/groceries/carlsberg-special-brew-4x440ml

From memory, I understand that fat tyres actully have less rolling resistance than skinny tyres

As always Mr Flecc is correct... https://www.gov.uk/guidance/the-highway-code/using-the-road-159-to-203 rule 201 refers - but the highway code is in the main advisory unless it states actual regulations